Aluminum Brazing Alloys
Used for the joining of aluminum base metals to similar or dissimilar base metals. Aluminum brazing alloys typically contain silicon (under the BAlSi classification) or zinc and melt below the solidus of brazeable base metals. Wire and rod are used for manual applications, and preformed rings or shapes for furnace operations. A flux must be used to wet the base metal and inhibit surface oxides unless brazing in a vacuum.